Even in the United States after the revolution they implemented authoritarian measures to ensure the security of their revolution. They sized the land of Loyalists and effectively drove them out if the country. They killed Loyalists, who were their fellow colonists, for their opposition to the revolution. They attempted tirelessly for peaceful transition to independence but the Monarchy refused them and ignored them until they were left with no choice but to begin violent armed revolution. All revolutions are authoritarian in their nature. The American revolutionaries were seizing their power by force and imposing their self actualized authority over the colonies in pursuit of their own economic and social freedoms.

The United States is authoritarian and many of the same ways that socialist states are authoritarian. If you don't believe me, look at the history of the socialist movement in America. Look at what the state was and still is willing to do to its own citizens for criticizing and organizing against the capitalist and imperialist system that the state runs on.

Are you here to tell me that McCarthyism and the red scare were democratic in their execution? That they were in line with the Free Speech and Free Expression ethos the United States projects? They were not times of political democratic freedom. Even in recent times you have leaders of movements critical of the state being killed for their political positions. Students killed during the anti-war movement in the 60s and 70s. Anti-War activists driven out of their employment and careers over their opposition to the state and it's actions in Vietnam.

So what do you call authoritarianism under capitalism then? Democracy??